CN203019708U - Hydraulic control system - Google Patents
Hydraulic control system Download PDFInfo
- Publication number
- CN203019708U CN203019708U CN 201220648098 CN201220648098U CN203019708U CN 203019708 U CN203019708 U CN 203019708U CN 201220648098 CN201220648098 CN 201220648098 CN 201220648098 U CN201220648098 U CN 201220648098U CN 203019708 U CN203019708 U CN 203019708U
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- Prior art keywords
- valve
- master cylinder
- control system
- hydraulic control
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000006073 displacement reaction Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 12
- 239000002828 fuel tank Substances 0.000 claims description 11
- 238000013459 approach Methods 0.000 claims description 8
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 5
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model provides a hydraulic control system which comprises a main cylinder and an oil tank. A piston cylinder of the main cylinder is provided with a sliding block. The hydraulic control system further comprises a programmable logic controller (PLC) connected with the sliding block and used for controlling descending, stroke returning, and descending speed and pressure of the piston cylinder of the control main cylinder. A proximity switch is arranged in an extending direction of the piston cylinder of the main cylinder. The oil tank is connected with a first oil opening through a constant power variable pump, a cartridge valve, an overflow valve, a two-position four-way electromagnetic valve, a one-way valve, a cartridge valve with a shuttle valve, a throttling valve and a proportional valve in sequence. When the hydraulic control system machines a workpiece, descending speed of the sliding block can be adjusted through on-off of each electromagnetic valve in the cartridge valve of the hydraulic control system, and therefore idle running time of the sliding block is reduced. The working speed of the main cylinder is ensured by a variable curve of the constant power variable pump, qualification rate of products is greatly improved, the phenomena that the products are stretched and scrapped due to the fact that a speed can not be adjusted are reduced, and the hydraulic control system has strong practicality and obvious economic benefits.
Description
Technical field
The utility model relates to a kind of hydraulic control system.
Background technology
In the use procedure of hydraulic press, exist the workpiece that speed and pressure requirement are arranged is added in existing hydraulic press master cylinder control system and be subject to certain limitation man-hour, the workpiece angle is in draw speed pulls open workpiece when too fast, make workpiece wrinkling when draw speed is too small, and insufficient pressure and the excessive workpiece that causes of pressure can not moulding or the problem destroyed of workpiece, thereby affect normally carrying out smoothly of workpiece processing, be unfavorable for the raising of production efficiency, the problems referred to above are the problems that should solve in the control system design of hydraulic press and production and application process.
The utility model content
The purpose of this utility model is to provide a kind of hydraulic control system and solves the workpiece to having speed and pressure to require that exists in prior art and add and be subject to certain limitation man-hour, the workpiece angle is in draw speed pulls open workpiece when too fast, make product wrinkling when draw speed is too small, and insufficient pressure and the excessive workpiece that causes of pressure can not moulding or the problem destroyed of product.
Technical solution of the present utility model is:
a kind of hydraulic control system, comprise master cylinder and fuel tank, the piston cylinder of described master cylinder is connected with slide block, also comprise descending for the piston cylinder connection sliding block of controlling master cylinder, backhaul, downstream rate, the PLC controller of pressure, the direction of stretching out at the piston cylinder of described master cylinder is provided with approach switch, described fuel tank is successively by the variable displacement with constant power pump, inserted valve, overflow valve, two position four-way solenoid valves, check valve, band shuttle valve inserted valve, choke valve, proportioning valve connects the hydraulic fluid port one of described master cylinder, described band shuttle valve inserted valve limits inserted valve by tape travel successively, the 2/2-way magnetic valve connects the oil-out two of described master cylinder, described fuel tank connects the hydraulic fluid port three of described master cylinder by the external control prefill valve.
Further improve and be: the downstream rate of described slide block is controlled the changes in flow rate that the variation of load causes by the variable displacement with constant power pump, and described pressure is regulated by the control ratio valve by the PLC controller.
Further improve and be: described check valve be provided with Pressure gauge with the oil circuit that is connected between the shuttle valve inserted valve, the oil circuit that is connected that the hydraulic fluid port of described proportioning valve and master cylinder is is provided with pressure sensor.
Further improve and be: described master cylinder is fixed in the fuselage of hydraulic press.
The beneficial effects of the utility model are: a kind of hydraulic control system of the utility model, workpiece is being added man-hour, the master cylinder speed of service, be that slide block down speed can be adjusted by the break-make of controlling each magnetic valve in the hydraulic control system inserted valve, thereby reduce the slide block no-load running time, the master cylinder operating rate is guaranteed by variable displacement with constant power pump variable curve, so greatly improved the qualification rate of product and reduced because speed can not be regulated the phenomenon that causes product to stretch and scrap, having had very strong practicality and significant economic benefit.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Wherein: 1-fuel tank, 2-variable displacement with constant power pump, 3-inserted valve, 4-overflow valve, 5-two position four-way solenoid valves, 6-check valve, 7-Pressure gauge, 8-band shuttle valve inserted valve, 9-tape travel restriction inserted valve, 10-2/2-way magnetic valve, 11-pressure sensor, the 12-proportioning valve, 13-choke valve, 14-master cylinder, the 15-approach switch, 16-hydraulic fluid port one, 17-hydraulic fluid port two, 18-hydraulic fluid port three, 19-external control prefill valve, 20-slide block.
The specific embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
as shown in Figure 1, the present embodiment provides a kind of hydraulic control system, comprise master cylinder 14 and fuel tank 1, the piston cylinder of described master cylinder 14 is connected with slide block 20, also comprise descending for the piston cylinder connection sliding block 20 of controlling master cylinder 14, backhaul, downstream rate, the PLC controller of pressure, the direction of stretching out at the piston cylinder of described master cylinder 14 is provided with approach switch 15, described fuel tank 1 is successively by variable displacement with constant power pump 2, inserted valve 3, overflow valve 4, two position four-way solenoid valves 5, check valve 6, band shuttle valve inserted valve 8, choke valve 13, proportioning valve 12 connects the hydraulic fluid port 1 of described master cylinder 14, described band shuttle valve inserted valve 8 limits inserted valve 9 by tape travel successively, 2/2-way magnetic valve 10 connects the oil-out 2 17 of described master cylinder 14, described fuel tank 1 connects the hydraulic fluid port 3 18 of described master cylinder 14 by external control prefill valve 19.The downstream rate of described slide block 20 is controlled by the changes in flow rate that the variation of 2 pairs of loads of variable displacement with constant power pump causes, described pressure is regulated by control ratio valve 12 by the PLC controller.Described check valve 6 is provided with Pressure gauge 7 with the oil circuit that is connected with 8 of shuttle valve inserted valves, and the oil circuit that is connected that the hydraulic fluid port of described proportioning valve 12 and master cylinder 14 is one 16 is provided with pressure sensor 11.Described master cylinder 14 is fixed in the fuselage of hydraulic press.
A kind of hydraulic control system of the present embodiment is regulated by master cylinder 14 each trip segment speed of operation and pressure to hydraulic press,
Controlling slide block 20 goes slowly: when slide block 20 runs to S2 in approach switch 15, the PLC controller makes magnetic valve YV5 and the magnetic valve YV6 of the magnetic valve YV1 of two position four-way solenoid valves 5 and magnetic valve YV2,2/2-way magnetic valve 10 get electric, the cavity of resorption loop of the d counterbalance valve 5MPa access master cylinder 14 in overflow valve 4, produce back pressure, the piston cylinder speed of service of master cylinder 14 is determined by the flow of variable displacement with constant power pump 2.
The downstream rate of slide block and pressure: when slide block 20 runs to S3 in approach switch 15, the PLC controller makes magnetic valve YV5 and the magnetic valve YV6 of the magnetic valve YV1 of two position four-way solenoid valves 5 and magnetic valve YV2,2/2-way magnetic valve 10 get electric, proportioning valve 12 work, the variable curve controlled of the changes in flow rate that the operating rate of master cylinder 14 is caused by the variation of 2 pairs of loads of variable displacement with constant power pump, pressure is regulated by control ratio valve 12 by the PLC controller.
Holding pressure control: when slide block runs to S4 in approach switch 15, slide block 20 is out of service, begins to stop pressurize, through the time-delay of the time relay, return after making slide block 20 stop the pressurize certain hour, slide block 20 was regulated by the time relay in the time of staying at bottom dead centre place again.
Claims (4)
1. hydraulic control system, comprise master cylinder (14) and fuel tank (1), the piston cylinder of described master cylinder (14) is connected with slide block (20), it is characterized in that: also comprise descending for the piston cylinder connection sliding block (20) of controlling master cylinder (14), backhaul, downstream rate, the PLC controller of pressure, the direction of stretching out at the piston cylinder of described master cylinder (14) is provided with approach switch (15), described fuel tank (1) is successively by variable displacement with constant power pump (2), inserted valve (3), overflow valve (4), two position four-way solenoid valves (5), check valve (6), band shuttle valve inserted valve (8), choke valve (13), proportioning valve (12) connects the hydraulic fluid port one (16) of described master cylinder (14), described band shuttle valve inserted valve (8) limits inserted valve (9) by tape travel successively, 2/2-way magnetic valve (10) connects the oil-out two (17) of described master cylinder (14), described fuel tank (1) connects the hydraulic fluid port three (18) of described master cylinder (14) by external control prefill valve (19).
2. hydraulic control system as claimed in claim 1, it is characterized in that: the downstream rate of described slide block (20) is controlled the changes in flow rate that the variation of load causes by variable displacement with constant power pump (2), and described pressure is regulated by control ratio valve (12) by the PLC controller.
3. hydraulic control system as claimed in claim 1 or 2, it is characterized in that: described check valve (6) is provided with Pressure gauge (7) with the oil circuit that is connected between band shuttle valve inserted valve (8), and the oil circuit that is connected between the hydraulic fluid port one (16) of described proportioning valve (12) and master cylinder (14) is provided with pressure sensor (11).
4. hydraulic control system as claimed in claim 1 or 2, it is characterized in that: described master cylinder (14) is fixed in the fuselage of hydraulic press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648098 CN203019708U (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220648098 CN203019708U (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203019708U true CN203019708U (en) | 2013-06-26 |
Family
ID=48643717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220648098 Expired - Fee Related CN203019708U (en) | 2012-11-30 | 2012-11-30 | Hydraulic control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203019708U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103625008A (en) * | 2013-11-22 | 2014-03-12 | 沈阳大学 | Oil pressure punch control system based on PLC |
| CN103696999A (en) * | 2013-12-20 | 2014-04-02 | 西南铝业（集团）有限责任公司 | Stretcher control system |
| CN103758811A (en) * | 2014-01-08 | 2014-04-30 | 江苏大洋精锻有限公司 | Bypass pressure relief system |
| CN103847128A (en) * | 2012-11-30 | 2014-06-11 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN104847724A (en) * | 2014-02-17 | 2015-08-19 | 罗伯特·博世有限公司 | Valve block for movement of crane suspension |
-
2012
- 2012-11-30 CN CN 201220648098 patent/CN203019708U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103847128A (en) * | 2012-11-30 | 2014-06-11 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN103847128B (en) * | 2012-11-30 | 2015-11-18 | 江苏沃得机电集团有限公司 | Hydraulic control system |
| CN103625008A (en) * | 2013-11-22 | 2014-03-12 | 沈阳大学 | Oil pressure punch control system based on PLC |
| CN103696999A (en) * | 2013-12-20 | 2014-04-02 | 西南铝业（集团）有限责任公司 | Stretcher control system |
| CN103758811A (en) * | 2014-01-08 | 2014-04-30 | 江苏大洋精锻有限公司 | Bypass pressure relief system |
| CN104847724A (en) * | 2014-02-17 | 2015-08-19 | 罗伯特·博世有限公司 | Valve block for movement of crane suspension |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20131130 |